Low-complexity PTS scheme based on phase factor sequences optimization  

作　　者：JI Ce ZHANG Chao ZHU Wenjing 

机构地区：[1]School of Computer Science & Engineering, Northeastern University

出　　处：《Journal of Systems Engineering and Electronics》2018年第4期707-713,共7页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(61673093;61370152);the Science and Technology Project of Shenyang(F16-205-1-01)

摘　　要：In this paper, a new partial transmit sequence（PTS）scheme with low computational complexity is proposed for the problems of high computational complexity in the conventional PTS method. By analyzing the relationship of candidate sequences in the PTS method under the interleaved partition method, it has been discovered that some candidate sequences generated by phase factor sequences have the same peak average power ratio（PAPR）. Hence, phase factor sequences can be optimized to reduce their searching times. Then, the computational process of generating candidate sequences can be simplified by improving the utilization of data and minimizing the calculations of complex multiplication. The performance analysis shows that, compared with the conventional PTS scheme, the proposed approach significantly decreases the computational complexity and has no loss of PAPR performance.In this paper, a new partial transmit sequence（PTS）scheme with low computational complexity is proposed for the problems of high computational complexity in the conventional PTS method. By analyzing the relationship of candidate sequences in the PTS method under the interleaved partition method, it has been discovered that some candidate sequences generated by phase factor sequences have the same peak average power ratio（PAPR）. Hence, phase factor sequences can be optimized to reduce their searching times. Then, the computational process of generating candidate sequences can be simplified by improving the utilization of data and minimizing the calculations of complex multiplication. The performance analysis shows that, compared with the conventional PTS scheme, the proposed approach significantly decreases the computational complexity and has no loss of PAPR performance.

关 键 词：partial transmit sequence （PTS） peak average powerratio （PAPR） phase factor sequences optimization orthogonal frequency division multiplexing （OFDM） low computational com-plexity 

分 类 号：TN-4[电子电信]